Dial die machine



Dec. 27, 19732. C, 555555 EL 1,892,168

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DIAL DIE MACHINE' Filed Deo. 4, 1928 4 Sheets-Sheet 2 Zim, w/M

Dec. 2.7, 1932. C, s, slEGEL 1,892,168

DIAL DIE MACHINE Filed Deo. 4, v1928 A 4 Sheets-Sheet 5 INVENTOR M/Q ATTORNEY DEC. 27, C s, SIEGEL 1,892,168

DIAL DIE MACHINE Filed Deo. 4, 1928 4 Sheets-Sheet 4 INVEN R Patented Dec. 27v i932 TES TENT OFFICE Ll LESS. SIEGEL, OF NEW YORK, N. Y., ASSIGNOR TO DIAL ENGINEERING CORPORATION, A CORPORATION F NEW YORK DIAL DIE MACHINE Application led December 4, 1928. Serial No. 323,769.

My invention relates to improvements in dial die machines.

The principal-object of my invention is\toy a greaterfdegree of precision and economy,

whereby a number of operations may be consecutively performed in less than one revolution of the dial and quantity production of a completed article at minimum manufacturing cost may be effected; f

One novel feature of my invention resides in the provision of a rigid construction of a U shaped blanking die holder arranged to accommodate the depressing and returning movements of a. blank carrying dial, by which Vthe blanks may be cut from a strip or roll.

Another novel feature of my invention resides in the provision of means by which the punched blanks may be placed in position in a dial feeding retainer for a subsequent form- 3o ing operation. y

Another novel feature resides in the provision of means for holding the work in the dial while being extractedfrom-oneforming die and being carried to another forming die.

Another novel feature resides in the provision of means for releasing the-work in the dial after a forming operation.

Another novel feature resides in the provision of means for positively registering the 40 dial form holders with the dies prior to each forming operation.

Another novel feature resides in the provision of means for locking and unlocking the dial for the timing operations and to prevent coasting of the dial.

A still further novel feature of the improved dial die machine, is the provision of a special U-shaped die holder, providing an upper and lower jaw, a rotary dial plate ar- '5o ranged te Shift metal blanks betweenthe jaws, means for imparting an upward return motion to the dial plate, and means for producing a step-by-step rotative movement thereof, so that successive forming operations may be performed on Athe .blanks carried by said rotary plate, and'l the blanks released from the die after the forming operations.

Another novel feature resides in the provision of means for depressing and returning the dial during the punching, placing and oo forming operations.

Still another novel feature resides in the provision of novel combinations and arrangement of parts more fully shown in the drawings, described in the specification and set forth in the claims.

My invention is illustrated in the accompanying drawings in which:

Fig. 1 is a plan view of a dial die machine in accordance with my invention.

Fig. 2 is a sectional elevation taken on line 24-2 of Fig. 1. 'f

Fig. 3 is an enlarged sectional .elevation taken on line 3 3 of Fig. 1 through portions of the dial, form holder and releasing means;

a portion of a lower forming die being also shown. u

Fig. 4 is a sectional elevation taken on line 4 4 of Fig. 1 showing means for registering the dial rand for returning the dial from a depressed position.

Fig. 5 is a side elevation with certain parts broken away and other parts removed.

Fig. 6 is a detail elevation of the mechanism for operating the knock-out plunger.

Fig. 7 is a detail side elevation of the feed rollers; and

Fig. 8 is a detail endvelevation of the feed rollers.

Like numerals refer to like parts through4 90 out the several views.

Referring to the drawings, a dial die machine may embody constructions in accordance with my invention, as follows:

Adapted to be mounted upon and secured to a platen 5 indicated as a supporting member of a press, by dot and dash lines, is the lower portion of the dial die machine assembly as shown in Fig. 1. Adapted to be carried and guided by the reciprocating crosshead member of the press as indicated by dot and dash lines, is the upper portion of the dial die machine assembly as shown in section in Fig. 2. Secured to and extending perpendicularly from base plate 6 are guide posts 7 and 8. Formed in-the base plate and radially arranged about a guide post 7 are` recesses 9y into each of which is arranged a spring 10 into which is inserted a pin 11 carrled by athrust washer 12 which is supported by the springs and is provided with an annular race Way for balls 13 which are arranged to rotate in a similar annular race way which is formed in thrust Washer 14 secured to the dial 15 which is slidably and rotatably arranged about the guide post 7 in co-operation with collar 16. Formed through the dial equi-distant from the guide post 7 and equidistant from each other are apertures 17 into which are inserted blank and form holders 18, which are interchangeable, and are secured to the dial by screws 19 and provided with fixed blank and form holding lugs 20 and also with releasing lingers 21 which are arranged to rock upon pins 22 by action of resilient cushion member 23 which holds each finger in an extended position until forming die surface 24 is encountered .by the blank. Inserted into apertures formed through the dial equi-distant from the post 7 and equidistant from each other in corresponding relation with apertures 17 are registering bushings 25 adapted to be slidably depressed over guide pins 26 the lower ends of which are secured to plates 27 which are mounted upon and secured to the base plate in such positions that the blank and form holders will accurately register with lower forming d ies 28, 29, 30 and 31. Arranged at the perlphery of the dial and securely inserted into notches formed therein are inserted contacts 32 1n corresponding radial relation with the registering bushings. Mounted upon and securely attached to the base plate is a rigid U shaped blanking die holder 83 formed in such manner thatthe movements of the dial may be accommodated. Formed through the upper portion of the blanking die holder and arranged to register with= a blank and form holder at a point equi-distant from the guide pins is aperture 34, concentric `with which is a countersunk depression into which is inserted blanking die 35. Mounted upon and secured to the blanking die holder is guide 36 in which is formed a recess or rest 37 for inserting the material from which the blank state of compression by the placing plunger 41 which isslidably arranged therein and provided with an elongated aperture -42 through which a pin extends and is arranged through the walls of the placing plunger guide. Arranged near the lower end of the placing plunger guide and fitted therein is pin 43 the protruding ends of which are slidablyarranged in the forked end of blankplacing lever 44 which is fulcrumed upon pin 45 arranged in bracket 46 which is secured to the base plate at either side of slot 47. Arranged through punch holding plate 48 and adapted to be slldable on the guide posts 7 and 8 are bushings 49 and 5() respectively. Concentrically arranged above the blanking die and securely fitted into the punch holding plate is punch 51 through which is slidably arranged knock-out plunger 52, and recess 53 therefor is provided at the end of the punch. Secured to the punch holding plate in positions corresponding with the forming dies 28, 29, 30 and 31 are the upper forming similarly constructed but `differentl shaped dies, of which two are shown in Fig'. 2. Forming dies -54 and 55 are similar in construction and correspond with forming dies 28 and 29 respectively, and similarly constructedupper forming dies may be provided to cooperate with the lower forming dies 30 and 31. Secured to. the base plate is plate 56 through which is securely arranged post 57 adapted to actuate lever 58 which 1s fulcrumed on pin 59 mounted in post 60 which is secured to the punch holding plate. The lever 58 is connected with the upper end of lever 61 which is hinged at the upper end of the knock-out plunger. Secured to the punch holding plate is plate 62 through which is securely arranged stem 63 adapted to actuate the blank placing lever by the downward movement of the punch holdlng late. Mounted upon and secured to the Ease plate is bracket 64 at the top of which is secured arm 65 through which is arranged pin 66 carrying a pivotally mounted safety latch 67 having a cam shaped end 68 `and adapted to be forced into engagement with the inserted contacts by spring 69. Mounted upon and secured to the base pla-.te are guides 70 between which a slide 71 is slldably arranged upon the base plate and carrles a spring actuated pivoted ratchet 72 adapted to be engaged with the contacts by movement of rod 73, bell crank 74 and link 75 which are actuated .by the press. Securely arranged at one side of the slide is tooth 76 adapted to actuate the safety latch. Mounted upon and secured to the base plate is a pair of geared rolls 77 arranged to be driven by vertical movements of rod 78 which is actuated by the press. Inserted into apertures formed through the collar 16 are springs 79 into which'y are inserted pins 80 the upper ends of ywhich are securedto thrust washer 8l which Legales The rod 73 is connected by suitable means with the crank shaft of the press, so that it will be reciprocated thereby, and the bell crank 'lever 74 will operate the link or pitman 7 5, thereby shifting the slide 71. The rod 78 operates the pawl of Fig. 8 to turn the feed rollers in a strip feeding direction, step-by-step, in accordance with the usual practice of strip feeding to automatic die forming presses. This rod 78 is connected with the crank shaft of the press so that it will operate in properlyv timed relation to the strokesof the press ram 82.

The operation of a dial die machine ar' ranged to be operated by movements of a press or similar mechanism may be as follows:

A strip or roll of material to be blanked and formed, propelled by the feed rollers 77 in a strip feeding direction, is passed through the slot 37 and by a downward movement of the reciprocating member` or ram 82 of the ress, the punch 51 shears the material at the lanking die 35, and the lever 58 makes contact with the post 57 and actuatesthe knockout plunger 52, which insures the insertion of the blank into the blank and form holder 18 while the blank placing lever 44 is actu? ated by movement of the stem 63 and controls the placing plunger 41 which properly places the blank as the dial is depressed and by compression of the springs 79 by a downward movement of the reciprocating member 82. rlhe dial is returned to its upper position by action of springs 10 at which time the blank is supported by the releasing fingers 21. The slide 71 then moves horizontally and brings the tooth 7 6 into contactywith the'cam end 68 of the safety latch suiciently to disengage the Contact 32 as the ratchet 72 enters notch 83. On its return movement the slide causes the ratchetto turn the dial around until the safety latch engages the next Contact. The slide then makes a reverse movement which releases the safety latch and engages the adjacent contact and by a second return movement of the slide the dial is advanced to a position which\brings the cut blank above the lower-forming die 28. The reciprocating member of the press beingv timed in relation to the repeated movements of the slide, makes a downward movement during which the registering bushings 25 are accurately positioned by the guide pins 26 bringing the blank and depressed dial into correct position as the rst forming operation is performed between the lower forming die 28 and the upper forming die 54. The material to be cut having been manually fed forward through the slot toward the pair of rolls or having been engaged between the rolls, the same downward movement of the reciprocating member causes a repetition of the blanking operation. During the return movement of the reciprocating member, the article having received its j ing die 29 and carries the blank toa position above the lower die 28. The reciprocating member repeatedly makes timed operations with those of the ratchet and dial by which the article being formed is progressively advanced to the lower dies 30 and 31, where the completed article is ejected by any suitable means as the dial makes a movement to its upper position such means preferably being arranged so that the article encounters a fixed stem, not shown, but which it is understood may be secured to the press and may eX- tend through an aperture which may be formed through the punch holding plate. It is obvious that as the successive forming operations are being performed, blanks will be successively cut, placed in the blank and form holders and carried by the dial to the jforming dies, while the scrap material will be carried away by the rolls and the completed article will be successively ejected. The blank and form holders may be made in various shapes other than the circular form shown in the drawing. Although I have shown spring actuating mechanism as a means for returning the dial to the upper position, it is obvious that other equivalent mechanism maybe employed.

rl`he particular construction of the dies does notl form any partof the present invention. The die sets used will vary according to the type of finished product. What is important, however, is that `a multiplicity ofy die sets is used, comprising radially spaced sets, which are designed to perform successive operations on the same blank, andI that the rotary dial 15 carries the blanks from one forming station to another.

While rotary dials have lbeen used in the pastin connection with die forming punch presses, the present invention particularly embodies a rotary dial plate which is constructed to have a vertical movement to disengage the work from the lower set of dies, and which is advanced step-by-step so that successive die forming operations are carried out automatically. 1 v

Various other changes may be made in the construction and arrangement of parts other than those shown in the drawings, without departing from the spirit of my invention, and what I claim and desire to secure by Letters Patent is Y 1. A. die holder of U-shaped construction having opposed jaws separated from each other, means for holding a die on one of said jaws, and a vertically shiftable dial plate rotatably mounted to extend between said jaws.

2. The combination with a power punch press having a ram, a plate attached to said ram, a series of dies carried on said plate, a base, a post mounted on said base, a rotary dial plate sl'idable upon said post and having openings therein spaced from and around said post, compressible springs for holding said dial-normally elevated, means for advancing said dial plate step-by-step on said post, work retaining lingers disposed in radially spaced groups in said openings, and a plurality of mated dies, whereby the work will be progressively shifted vfor successive die forming operations. y

'3. A die form mechanism including a die holder formedin U-shape, a die therein, said die holder having a recess in its upper part for feeding material through said U-shaped die holder, and a reciprocable punch for cutting material against said die.

4. A forming die device including; a plurality of mated forming dies arranged in a circular series, means for carrying the article to be formed, said carrying means being arranged about a center of rotation from which said dies are equidistant, said carrying means adapted. to support a plurality of article holding devices interchangeable relative to said plurality of forming dies. r

5; A forming die device including; a plurality of mated forming dies arranged in a circular series, means for carrying the article v to be formed, saidc/carrying means being arranged about a center of rotation from which said dies are equidistant, and means'for axially moving said carrying means while in a registered alignment with respect to the movement of a die member. v

6. A forming die device including; a plurality of mated forming dies arranged in a circular series, means for carrying the article to be ormedT-sa'id carrying means being arranged about a center of rotation from which said dies are equidistant, means for`rotating said carrying means, and automatic ,means for locking and unlocking said carrying means from a previous position andlocking said rotating means in a new position.

7. A forming die device including; a plurality of mated forming dies arranged in a circular series, means for carrying the article to be formed, said carrying means arranged about a center of rotation from which said dies are equidistant, means for rotating said carrying means, means controlled by said rotating means for axially moving said carrying means while in registered alignment with/respect to the movement of a die member, and means for positively registering said carrying means with said mated .die meme5 bers.

8. A forming die device including; a plurality of mated forming dies arranged in a circular series, means for carrying the article to be formed, said carrying means being arranged about a center of rotation from which' said dies are equidistant, means for rotating said carrying means, means for axially moving said carrying means while in a registered alignment with respect to the movement of a die member, and means for timing said axial movement in relation to said rotating movement. f y

9. A cutting and forming device including; mated cutting dies, a plurality of mated forming dies, means for carrying a succes- -sion of the articles to be formed, said carrying means being arranged about a center of' rotation from which said dies are equidistant, means for rotating said carrying means, means for successively cutting the blank and means for successively performing a series of forming operations whereby to produce a successionof completely formed articles.

10. A cutting and. formingv device including; mated cutting dies, a plurality of mated forming dies, means for carrying a succession of the articles to be formed, said carrying means being arranged about a center of rotation from which said dies are equidistant, means for rotatingsaid carrying means, a die mounting member adapted to be secured to a reciprocating member of a press, and a mounting member for cooperating dies, said carrying means and said rotating means, adapted to be secured to a platen of a press.

y 11. A forming `die device including; a punch,mated forming dies arranged in a circular series, means for carrying the article to be formed," said carrying means being arranged about a center of rotation from which said dies are equidistant, and a U-shaped diev holding member adapted to receive a blank! said dies are equidistant, a U-shaped die holding member adapted to receive a blankin die, said blanking die beingl in registere alignment with respect to movement of said punch and said carrying means, and means for placing a punched blank into said carrymg means.

13. A forming .die device including; a punch, mated forming dies, means for carrying the article to be formed, said carrying means being arranged about a center of rotation from which said dies are equidistant, a U-shaped die holding member adapted to receive a blanking die in registered alignment wlth respect to movement of said punch and carrying means, and means for intermittently feeding strip or roll material when out of contact with said punch. I

14. A cutting and forming device including; means for cutting a blank to be formed, mated forming dies, a dial provided with a plurality of apertures, said dial being arranged about a center of rotation from which said dies are equidistant, means for rotating said dial, and means for axially moving said dial while in registered alignment with re- (spect to the movement of one of said forming les.

15. A die forming mechanism including; a die holder having separated jaws rigidly connected to each other, one of said jaws having a die provided with an opening, a reciproca-V ble punch for forming the material against said die and forcing the material through 4 said opening, and a vertically shiftable rotary dial plate mounted to turn step-by-step between successive reciprocations of the punch while always projecting between said Jaws. In testimony whereof, I have signed my name to this specification, this ninth day of November, 1928. CHARLES S. SIEGEL. 

